.us-scroll-line-col:first-of-type {
    margin-left: 20px;
}
.us-scroll-line-col {
    position: relative;
    height: 44px !important;
    text-align: center;
    width: auto !important;
    flex: 1 0 auto;
    margin: 0 12px;
    .us-nav-tit{
      line-height: 44px;
      font-size: 18px;

    }
    .us-nav-tit.active {
        color: #f84848;
        font-size: 18px;
        font-weight: 600;
    }
    .us-nav-tit.active:before {
        position: absolute;
        left: 50%;
        bottom: 0;
        content: "";
        z-index: 2;
        width: 20px;
        height: 5px;
        margin-left: -10px;
        background: url() no-repeat center center;
        background-size: contain;
    }
}
